MOST SUSTAINABLE PUBLIC SECTOR ORGANISATION – EDUCATION Rose Bowl


construction knowledge base. Experience gained by developers and contractors in building to Passivhaus standards at Leeds Met will benefit future projects at other HEIs in terms of quality of build, specifications beyond building regulations and overall energy efficiency. Leeds Met is currently putting a bid in to HEFCE’s Leadership Governance and Management Fund (Leading Sustainable Development in Higher Education) to conduct a comparative study between the performance of the townhouses against Passivhaus’ on the following: • Heat output from gas boilers


• Hot water consumption • Electricity consumption of panel heaters


• Overall energy usage per square meter/student


• Temperature and humidity – kitchens, livings rooms, bathrooms and bedrooms


• Air quality (CO2 levels) - kitchens,


livings rooms, bathrooms and bedrooms


• Insitu U-values of the walls, floor & ceiling


LEARNING POINTS THAT CAN BE APPLIED ACROSS THE SECTOR INCLUDE: Carnegie Village • Occupancy levels: • Low occupancy during the day and over holiday periods significantly affects the ability to maintain desirable temperatures


• Heating needs to be included from the outset


• A heating coil has been installed as part of the mechanical heat recovery ventilation system to reach and maintain desirable temperatures·


• Lessons learnt on Passivhaus construction


• The installation of safety barriers needs to be well thought out to avoid damage to the air barrier


• Air barrier membranes must be installed at party wall bypasses


• Avoid thermal bridging caused


by steel beams supported by the external party wall


• Extra timber used in construction needs to be avoided to ensure the effectiveness of insulation to reduce thermal bridging and ensure favourable U-value calculations


• Services must be run through an internal service voids rather than through the timber panel to maintain the integrity of the insulation.


• Partnership approach to implementing new standards • School of the Built


Environmental worked with Sheppard Construction to reach Passivhaus.


• Specialist team selected by Sheppard Construction to build passivhaus on the basis of reports and feedback from the School of the Built Environment.


• Academic support would have been beneficial at the tendering stage.


• Effective commissioning of meters • Ensure data is stored for longer than 31 days


• Set target points for


consumption per building to raise alarms which can be investigated immediately


• Temperature monitors in all bedrooms as well as communal areaso


• Include AMR that is CRC compliant in the project specification


SUSTAINABLE FM AWARDS 2010 |35


• Communication between Estates, design team, contractor, developer, BRE, Passivhaus Institute and academic support.


• Review of comparative developments by design team and client at the start providing valuable lessons learnt


• Robust design development crucial to the success of the projecto Whole team involvement at all stages essential


• Full construction of ground floor townhouse to review quality, revises specifications and design 6 months before construction started.·


• The importance of building a good relationship with students living in accommodation built to new standards.


Rose Bowl Future projects will use consumption data from existing buildings, especially for gas, to ensure load profiling is as accurate as possible. Reducing the risk of take-or- pay clauses being implemented. Performance of all sustainability elements for both projects to be reviewed on an annual basis to assess the impact of market prices for energy, maintenance, and weather conditions on performance, payback and whole- life-costing models.


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